<template>
<div>
   <div class="search">
    <input type="text"
    placeholder="请输入城市名字或拼音"
    class="search-input"
    v-model="keyword">
  </div>
  <div class="search-content" ref="search"
  v-show="keyword">
    <ul>
      <li class="search-item border-bottom"
      v-for="item of list"
      :key="item.id"
       @click="handleCityClick(item.name)">
        {{item.name}}
      </li>
      <li class="search-item border-bottom" v-show="hasNoData">
        没有找到匹配数据
      </li>
    </ul>
  </div>
</div>

</template>
<script>
import Bscroll from 'better-scroll'
import { mapMutations } from 'vuex'
export default {
  name: 'CitySearch',
  data () {
    return {
      keyword:'',
      list:[],
      timer:null
    }
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  watch: {
    keyword() {
      if(this.timer) {
        clearTimeout(this.timer)
      }
      this.timer=setTimeout(() =>{
        const result = []
        for(let i in this.cities){
          this.cities[i].forEach((value) =>{
            if (value.spell.indexOf(this.keyword)>-1 ||
            value.name.indexOf(this.keyword)>-1){
              result.push(value)
            }
          })
        }
        this.list=result
      },100)
    }
  },
  props: {
    cities: Object
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  mounted () {
    this.scroll=new Bscroll(this.$refs.search)
  }
}
</script>
<style lang="stylus" scoped>
  @import '~@/assets/styles/veribles.styl'
  .search
    height .72rem
    padding 0 .1rem
    background $bgColor
    .search-input
      box-sizing border-box
      width 100%
      height .62rem
      line-height .62rem
      padding 0 .2rem
      text-align center
      border-radius .06rem
      color #666
  .search-content
    position absolute
    top 1.58rem
    left 0
    right 0
    bottom 0
    overflow hidden
    z-index 1
    background #eee
    .search-item
      line-height: .62rem
      padding-left: .2rem
      background: #fff
      color: #666
</style>
